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The Best Episodes of It's Always Sunny in Philadelphia Season 18

Every episode of It's Always Sunny in Philadelphia Season 18 ranked from best to worst. Discover the Best Episodes of It's Always Sunny in Philadelphia Season 18!

Binge this in 45m•Peaking at 8.3/10

Four egocentric friends run a neighborhood Irish pub in Philadelphia and try to find their way through the adult world of work and relationships. Unfortunately, their warped views and precarious judgments often lead them to

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Episode Rankings

  1. #1 Fan Favorite
    It's Always Sunny in Philadelphia Season 18 Episode 1 - Frank Marries a Corpse
    7.2/10(5 votes)

    #1 - Frank Marries a Corpse

    S18:E1

    The guys help Frank with his cold feet ahead of his wedding to Sam. Dee tries to scare Sam off the nuptials with testimonies from The Waitress, Artemis, and Snail.

    Director:Todd Biermann
    Writer:Charlie Day

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  2. It's Always Sunny in Philadelphia Season 18 Episode 2 - Dennis and Dee Don't Get Rich
    8.3/10(3 votes)

    #2 - Dennis and Dee Don't Get Rich

    S18:E2

    The Reynolds twins push themselves to the limit to secure Sam's transfer of wealth. Charlie and Frank plan a proper memorial for Bonnie during the annual Mummers Parade.

    Director:Todd Biermann
    Writer:Charlie Day

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Season 18 Ratings Summary

"Frank Marries a Corpse" is the best rated episode of "It's Always Sunny in Philadelphia" season 18. It scored 7.2/10 based on 5 votes. Directed by Todd Biermann and written by Charlie Day, it aired on 8/17/2026. This episode is rated 1.1 points higher than the second-best, "Dennis and Dee Don't Get Rich".